After thinking it through, Zhang Xiaohua placed both hands on the prominent part of the furnace and transferred his True Qi into it. The furnace was extraordinary as, with the manipulation of his True Qi, the temperature inside the furnace could be controlled at will.
"Isn't this very easy to control?" Zhang Xiaohua couldn't help frowning.
After getting familiar for a moment, Zhang Xiaohua turned the earth fire to its maximum, placed one hand on the furnace's prominence, and used True Qi to control the temperature inside the furnace. With the other hand, he followed the Pill Formula for the Blood Replenishing Pill, and successively added the Gastrodia and other herbs into the furnace, refining out the impurities from within. In no time, all of the herbs were added, and Zhang Xiaohua finally placed both hands on the protruding part, slowly refining the furnace with a gentle flame according to the Martial Dao Alchemy Skill records.
